Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1996-08-13
1999-05-18
Ball, Michael W.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
1562722, 1562757, 1563809, 156580, B32B31/04
Patent
active
059047950
ABSTRACT:
The present invention relates to a method for bonding together two disc substrates, at least one disc substrate having a UV transmissive-visible light reflective information recording layer provided on a UV transmissive base. In this method, the disc substrates are bonded together, so that the information recording layer of one disc substrate faces the other disc substrate, by employing UV irradiation to cure a UV curable composition used as a bonding agent. In the case of the present invention, to cure the bonding agent, UV is irradiated in a single or repeating flash so as not to impair the information recording layer. As a result, the bonding agent can be cured in a shorter period of time with less energy consumed as compared to the conventional method of using continuous irradiation of UV light to cure a UV curable composition used as a bonding agent. Accordingly, the present method enables a product disc to be obtained in a shorter time, with less energy used, so that productivity (i.e., number of bondings per unit time) is improved.
REFERENCES:
patent: 3865589 (1975-02-01), Freeman et al.
patent: 4167669 (1979-09-01), Panico
patent: 4214935 (1980-07-01), Nagai
patent: 4917751 (1990-04-01), Ohta et al.
Ebisawa Shoei
Fukutomi Hiroshi
Murakami Kazuo
Ball Michael W.
Dainippon Ink & Chemicals Inc.
Yao Sam Chuan
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